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Valve Lifter

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  1. Check the valve lifter visually.
  2. Measure the outer diameter of valve lifter.

    Outer diameter of valve lifter: 

    Standard 

    34.959 - 34.975 mm (1.3763 - 1.3770 in) 

    Fig 1: Identifying Valve Lifter Outer Diameter
    G04998743Courtesy of SUBARU OF AMERICA, INC.
  3. Measure the inner diameter of valve lifter mating surface on cylinder head.

    Valve lifter mating surface inner diameter: 

    Standard 

    34.994 - 35.016 mm (1.3777 - 1.3786 in) 

    Fig 2: Measuring Valve Lifter Mating Surface Inner Diameter
    G04998744Courtesy of SUBARU OF AMERICA, INC.
  4. Check the clearance between valve lifter and valve lifter mating surface. The clearance can be checked by measuring the outer diameter of valve lifter and the inner diameter of valve lifter. If it exceeds the standard or offset wear occurs, replace the cylinder head.

    Valve lifter and valve lifter mating surface clearance: 

    Standard 

    0.019 - 0.057 mm (0.0007 - 0.0022 in) 

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